<template>
    <div>
         <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card class="box-card">
            <el-row :gutter="20">
                <el-col :span="8">
                     <el-input placeholder="请输入内容" v-model.trim='queryInfo.query' clearable @clear='getUserList'>
                         <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                     </el-input>
                </el-col>
                <el-col :span='4'>
                    <el-button type="primary" @click="dialogVisible = true">添加用户</el-button>
                </el-col>
            </el-row>
            <!-- 用户列表区域 -->
            <el-table :data="userList" border stripe>
                <el-table-column type="index" label="#"></el-table-column>
                <el-table-column label='姓名' prop='username'></el-table-column>
                <el-table-column label='邮箱' prop='email'></el-table-column>
                <el-table-column label='电话' prop='mobile'></el-table-column>
                <el-table-column label='角色' prop='role_name'></el-table-column>
                <el-table-column label='状态'>
                    <template slot-scope="scope">
                        <el-switch
                        v-model="scope.row.mg_state"
                        @change="userStateChange(scope.row)"
                       >
                        </el-switch>

                    </template>
                </el-table-column>
                <el-table-column label='操作' width="180px">
                    <template slot-scope="scope">
                        <!-- 编辑按钮 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUser(scope.row.id)"></el-button>
                        <!-- 分配权限 -->
                         <el-tooltip effect="dark" content="分配角色" placement="top" :enterable='false'>
                               <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                         </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>
            <!-- 分页区域 -->
             <el-pagination
               @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="this.queryInfo.pagenum"
                :page-sizes="[1, 2, 5, 10]"
                :page-size="this.queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="this.total">
            </el-pagination>
        </el-card>
        <!-- 添加用户对话框 -->
        <el-dialog
            title="添加用户"
            :visible.sync="dialogVisible"
            width="50%"
            @close='addDialogClose'
            >
            <!-- 内容主体区域 -->
            <el-form :model="addForm" :rules="rules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password" type="password"></el-input>
                </el-form-item>
                 <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="dialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUserInfo">确 定</el-button>
            </span>
        </el-dialog>
          <!-- 修改用户对话框 -->
          <el-dialog
                title="修改用户对话框"
                :visible.sync="editDialogVisible"
                width="50%"
                @close='editDialogClose'
                >
            <el-form :model="editForm" :rules="editRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                 <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
                <span slot="footer" class="dialog-footer">
                    <el-button @click="editDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="editUserInfo">确 定</el-button>
                </span>
        </el-dialog>
        <!-- 分配角色对话框 -->
        <el-dialog
            title="分配角色"
            :visible.sync="setRoleDialogVisible"
            width="50%"
            @close='setRoleDialogClosed'
            >
           <div>
               <p>当前的用户:{{ userInfo.username }}</p>
               <p>当前的角色:{{ userInfo.role_name }}</p>
               <p>分配新角色:
                   <el-select v-model='selectedRoleId' placeholder="请选择">
                       <el-option v-for="item in rolesList"
                       :key="item.id" :label="item.roleName"
                       :value="item.id">

                       </el-option>
                   </el-select>
               </p>
           </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>
    </div>

</template>

<script>
export default {
  data () {
    // 验证邮箱规则
    const checkEmial = (rule, value, callback) => {
      // 这是验证邮箱的正则表达式
      const regEmial = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmial.test(value)) {
        return callback()
      } else {
        callback(new Error('请输入合法的邮箱'))
      }
    }
    // 验证手机号的规则
    const checkMobile = (rule, value, callback) => {
      const regMobile = /^1[3|4|5|8][0-9]\d{4,8}$/
      if (regMobile.test(value)) {
        return callback()
      } else {
        callback(new Error('请正确输入您的手机号'))
      }
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页面
        pagenum: 1,
        // 当前每页显示多少条
        pagesize: 2
      },
      userList: [],
      total: 0,
      userInfo: '', // 这是需要被分配角色用户信息
      // 控制修改用户对话框展示
      editDialogVisible: false,
      // 控制添加对话框的显示与隐藏
      dialogVisible: false,
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      rolesList: [], // 所有角色的数据列表
      selectedRoleId: '', // 已选中的id值
      // 添加用户表单数据
      addForm: {
        username: '',
        email: '',
        password: '',
        mobile: ''
      },
      // 查询到的用户信息对象
      editForm: {
        username: '',
        email: '',
        mobile: ''
      },
      // 添加表单验证规则对象
      rules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名的长度在3-10个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '用户名的长度在6-15个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          {
            validator: checkEmial, trigger: 'blur'
          }
        ],
        mobile: [

          { validator: checkMobile, trigger: 'blur' }

        ]
      },
      editRules: {
        email: [
          {
            validator: checkEmial, trigger: 'blur'
          }
        ],
        mobile: [

          { validator: checkMobile, trigger: 'blur' }

        ]
      }
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.$http.get('/users', { params: this.queryInfo })
      if (res.meta.status === 200) {
        this.userList = res.data.users
        this.total = res.data.total
      } else {
        this.$message.error('获取用户列表失败')
      }
    },
    // 监听pagesize改变
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 这是监听页码值改变的事件
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听switch状态的改变
    async userStateChange (userInfo) {
      const { data: res } = await this.$http.put(`/users/${userInfo.id}/state/${userInfo.mg_state}`)

      if (res.meta.status === 200) {
        this.$message.success('更新用户状态成功')
      } else {
        userList.mg_state = !userInfo.mg_state
        return this.$message.error('更新用户状态失败')
      }
    },
    // 监听添加用户对话框的关闭事件
    addDialogClose () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮添加新用户
    addUserInfo () {
      this.$refs.addFormRef.validate(async (valid) => {
        console.log(this.addForm.username)
        if (!valid) return
        const { data: res } = await this.$http.post('/users', this.addForm)
        if (res.meta.status === 201) {
          this.$message.success('添加用户成功')
          this.dialogVisible = false
          this.getUserList()
        } else {
          this.$message.error('添加新用户失败!')
        }
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog (id) {
      const { data: res } = await this.$http.get(`/users/${id}`)
      if (res.meta.status === 200) {
        this.editForm = res.data
      } else {
        return this.$message.error('查询用户信息失败')
      }
      this.editDialogVisible = true
    },
    // 监听修改对话框的关闭事件
    editDialogClose () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo () {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return this.$message.error('修改用户信息失败')
        const { data: res } = await this.$http.put(`/users/${this.editForm.id}`, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })

        if (res.meta.status === 200) {
          this.$message.success('更新用户信息成功!')
        } else {
          this.$message.error('更新用户信息失败!')
        }
        this.editDialogVisible = false
      })
    },
    // 根据id删除对应的用户信息
    async removeUser (id) {
      // 弹框询问是否删除数据
      const result = await this.$confirm('此操作将永久删除该用户,是否继续？', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认删除，返回的是个字符串confirm;
      // 如果用户取消删除,返回的是个cancel
      if (result !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete(`/users/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败!')
      }
      this.$message.success('删除成功!')
      this.getUserList()
    },
    // 这是展示分配角色的对话框
    async setRole (role) {
      this.userInfo = role
      // 在展示对话框之前，要获取所有角色列表
      const { data: res } = await this.$http.get('/roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击按钮分配角色
    async saveRoleInfo () {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色')
      }
      const { data: res } = await this.$http.put(`/users/${this.userInfo.id}/role`, {
        rid: this.selectedRoleId
      })
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败')
      }
      this.$message.success('更新角色成功!')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听对话框关闭事件
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = ''
    }
  }

}
</script>

<style lang="less" scoped>
    .el-table{
        margin-top: 15px;
        font-size: 12px;
    }
</style>
